obviously i will need

Gearbox, sump, prop but what else do i need and if you could give a rough approx price the the items it would be much appreciated

 

You can go for the full 2wd parts. i.e. Fit the x-member, ARB, TCA's, Rack, Steering joint, Struts, breaks, sump, Gearbox, etc.

Or Get a T5 box + mount, prop, speedo cable, Clutch cable?.
Then remove the front shafts from the outer cv, small clip behind the cv boot. Remove the cv joint from the hub shaft. Remove the front diff and cross shaft and cover/ tape the hole over.
Don't know the rating of the 7" diff against the 7 1/2" Should be ok. unless your into drag racing.

 

Will a 2wd box go on with a 4x4 sump then?

 

i have a prop out of my 3dr

 

I belive so, but some of the bolts don't go on. Think the 4x4 has more of them on the bottom of the sump.

 

you'll need a plate to mount the gearbox cradle just take 1 off a 2wd and reweld into place its what i had to do when i reshelled my 2wd with a 4x4 shell